Light emitting device and electronic apparatus

Abstract

There is provided a light emitting device including: a semiconductor substrate; a plurality of pixel circuits that is disposed in a display region of the semiconductor substrate; a first wiring that is formed of a conductive material so as to be supplied with a predetermined electric potential; and a plurality of first contact portions that is formed of a conductive material so as to connect the semiconductor substrate and the first wiring. The plurality of first contact portions and the first wiring are provided in the display region.

What is claimed is: 
     
       1. A light emitting device comprising:
 a semiconductor substrate; 
 a plurality of pixel circuits that is disposed in a pixel region of the semiconductor substrate; 
 a first wiring that is formed of a conductive material so as to be supplied with a predetermined electric potential and extends in a direction; 
 a plurality of first contact portions that is formed of a conductive material so as to connect the semiconductor substrate and the first wiring; 
 a second wiring that is formed of a conductive material so as to be supplied with the predetermined electric potential; and 
 a plurality of second contact portions that is formed of a conductive material so as to connect the semiconductor substrate and the second wiring, 
 wherein the plurality of second contact portions and the second wiring are provided in a peripheral region of the semiconductor substrate that surrounds the pixel region and contains no pixels, and 
 the plurality of first contact portions and the first wiring are provided in the pixel region. 
 
     
     
       2. The light emitting device according to  claim 1 ,
 wherein the plurality of pixel circuits include a first pixel circuit and a second pixel circuit, 
 each of the first pixel circuit and the second pixel circuit includes
 a first light emitting element, and 
 a first transistor that supplies current to the first light emitting element, and 
 
 a source of the first transistor is connected to one of the plurality of first contact portions. 
 
     
     
       3. The light emitting device according to  claim 2 ,
 wherein the light emitting device is able to display at least a first color and a second color, 
 the plurality of pixel circuits includes a first display block corresponding the first color and a second display block corresponding the second color, 
 each of the first display block and the second display block includes at least two pixel circuits, 
 the first display block includes the first pixel circuit, and 
 the second display block includes the second pixel circuit. 
 
     
     
       4. An electronic apparatus comprising the light emitting device according to  claim 3 . 
     
     
       5. The light emitting device according to  claim 2 ,
 wherein one of the plurality of first contact portions includes a part of a source electrode of the first transistor. 
 
     
     
       6. An electronic apparatus comprising the light emitting device according to  claim 5 . 
     
     
       7. An electronic apparatus comprising the light emitting device according to  claim 2 . 
     
     
       8. The light emitting device according to  claim 1 ,
 wherein the pixel region includes a first unitary display region and a second unitary display region, 
 an area of the first unitary display region is equal to an area of the second unitary display region, and 
 the plurality of first contact portions includes a contact portion formed in the first unitary display region and a contact portion formed in the second unitary display region. 
 
     
     
       9. An electronic apparatus comprising the light emitting device according to  claim 8 . 
     
     
       10. The light emitting device according to  claim 8 ,
 wherein the light emitting device is able to display at least a first color and a second color, 
 the plurality of pixel circuits includes a first display block corresponding the first color and a second display block corresponding the second color, 
 each of the first display block and the second display block includes at least two pixel circuits, and 
 the first display block is disposed in the first unitary display region. 
 
     
     
       11. An electronic apparatus comprising the light emitting device according to  claim 10 . 
     
     
       12. The light emitting device according to  claim 1 ,
 wherein the semiconductor substrate includes a first impurity diffused region in the pixel region, and 
 the plurality of first contact portions is connected to the first impurity diffused region. 
 
     
     
       13. An electronic apparatus comprising the light emitting device according to  claim 12 . 
     
     
       14. The light emitting device according to  claim 1 ,
 wherein the plurality of pixel circuits is disposed in a matrix, and 
 the plurality of first contact portions is disposed in a matrix with a proportion of one row of first contact portions to two rows of the pixel circuits or with a proportion of one column of first contact portions to two columns of the pixel circuits. 
 
     
     
       15. An electronic apparatus comprising the light emitting device according to  claim 14 . 
     
     
       16. The light emitting device according to  claim 1 ,
 wherein the plurality of pixel circuits is disposed in a matrix, 
 the plurality of pixel circuits includes a plurality of sets of two pixel circuits formed of
 a second pixel circuit which has a second light emitting element and a second transistor, and 
 a third pixel circuit which has a third light emitting element and a third transistor and is next to the second pixel circuit in a row direction or a column direction, and 
 
 a source electrode of the second transistor and a source electrode of the third transistor are connected to one of the plurality of first contact portions. 
 
     
     
       17. The light emitting device according to  claim 1 ,
 wherein the second wiring includes a plurality of conductive wiring layers. 
 
     
     
       18. The light emitting device according to  claim 1 ,
 wherein the semiconductor substrate includes a second impurity diffused region in the peripheral region, and 
 the plurality of second contact portions is connected to the second impurity diffused region. 
 
     
     
       19. An electronic apparatus comprising the light emitting device according to  claim 1 . 
     
     
       20. The light emitting device according to  claim 1 , wherein the first wiring extends over the plurality of pixel circuits.